Doosan — Checking and adjusting injection timing

Adjustments · Fuel injection pump

From a Doosan service manual covering: P158LE, P158LE-III, P180LE, P180LE-1, P180LE-II, P180LE-S, P222LE, P222LE-1, P222LE-S, PU158TI, PU180TI, PU222TI. Check it applies to your exact model before use.

Applies to: Doosan P158LE, Doosan P180LE, Doosan P180LE-II, Doosan P222LE, Doosan PU158TI, Doosan PU180TI, Doosan PU222TI, Doosan P158LE engine, Doosan P180LE-1 EASOB/QB engine, Doosan P222LE-1 EAYOB/QB engine, Doosan PU158TI EASOA/QA engine, Doosan PU180TI EASOA/QA engine

Procedure

1. Remove plug screw in case cover on injection pump drive gear.
2. Turn crank pulley so mark on injection pump pointer coincides with matching mark (FB) on drive gear flange.
3. Check V-type edge of flywheel housing sight hole coincides with injection timing degree on flywheel.
4. To adjust, loosen fixing bolts (M8) of injection pump driving gear.
5. Turn crank pulley clockwise until V-groove of sight hole aligns with injection timing degree.
6. Coincide mark on injection pump pointer with FB mark by turning flange in oblong holes.
7. Tighten bolt (M8) to 2.2 kg.m and recheck fuel delivery start point.

Full service-parts list: Doosan P158LE →, Doosan P180LE →, Doosan P222LE →

Source: Doosan service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.

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